摘要
采用田间试验和数学模拟相结合的方法研究了喷灌条件下冬小麦田间水分转化规律，以喷灌水量无效消耗（土面蒸发＋深层渗漏）最小为目标，提出了节水型合理喷灌定额为４０～６０ｍｍ。以此为基础，结合田间土壤墒情和麦田苗情，总结出高产高效冬小麦节水喷灌模式。经过两年度田间示范试验，取得了高产（６９３０ｋｇ／ｈａ）、高效（水分生产效率达２．
In this paper,the law of water transform ation in the winter what field under the condition of sprinkler irrigation is studied by field experiment and mathematical simulation.Aimed at minimizing ineffeetive water consumption (surface evaponation plus deep percolation),the rational sprinkler irrigation quota is determined at 40～60mm. Accordingly, the model of high yield and high efficiency for sprinkling irrigation is established depending on soil moisture in the field and the growth of wheat seedlings. Through two year's demonstration experiment in the wheat field, a high yield of 6930kg/ha and a high efficiency,i.e. water productive efficiency, of 2.34kg/m 3 are obtained.
出处
《灌溉排水》
CSCD
1997年第1期14-18,共5页
Irrigation and Drainage
基金
国家自然科学基金
关键词
冬小麦
节水高效
喷灌模式
Winter wheat Water efficient High efficiency Model for sprinkler irrigation
